40 Category 1: Buildings 1 Plaswijckpark - Rotterdam, The Netherlands SE Contact Theo Meijer Address Dijkstelweg 26 3253TB Ouddorp, The Netherlands Website www.krepidoma.nl Constructiebureau Krepidoma is an engineering office that has been working since 1996 in the residential and commercial construction business, on commercial buildings and on industrial plants. We work out static calculations and drawings for supporting structures in steel, concrete, wood and foundations. Our clients are architects, contractors and individuals, and indirectly we also provide lateral support to large engineering companies. We specialise in thinking through the design, specification and implementation of a project, as well as fitting in the structure as well and as cheaply as possible in accordance with the architect’s design. Owner Foundation Plaswijckpark the Rotterdam/ Hillegersberg Architect Ssse| OvO associates Architects the Amsterdam General Contractor Fraanje B.V. Engineering Office Constructiebureau Krepidoma Construction Period 04/2012 - 04/2013 The project is named “the hollow house in the hill”, and is a 1600 m2 playground for children, consisting of several different attractions inside the house. Attached to the hollow house in the hill is a greenhouse-like construction of steel and glass, where the restaurant is situated. Our engineering office designed the steel construction of the hollow hill and the greenhouse; Adviesburo Luning designed the pile foundation and the concrete floors at ground level. This steel construction is built up in triangles from steel roof beams, “HEA and HEB”, (rotated 90 degrees, and on the underside of the beam there are welded plates, where the prefabricated wooden roof panels “lignatur” are placed), making the construction stable in each direction. We also designed all the difficult connections, in association with Meijers Staalbouw B.V. A part of the roof of the hollow house is also supported by a ’tree’ built up from steel tubes, which gives inside of the house a very striking appearance. The connections of the steel roof beams at the foundation are made with steel dowels of HE profiles, because of the large forces in the local x-direction of the beams. At some points there are three steel beams coming together at the foundation, which led to difficulties in designing the dowel. SCIA Engineer has the option to calculate the resulting forces at that point, which made it easier to design the dowel. The roof of the hill is finished with grass and ivy. Constructiebureau Krepidoma
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